The isothermal section at 500°C of the Al–Cu–Ho ternary system

Metal Flux Growth, Structural Relations, and Physical Properties of EuCu2Ge2 and Eu3T2In9 (T = Cu and Ag)

“…However, later Stel’makhovych et al reported the actual formula of these compounds as Y 3 Ag 1.5 Al 9.5 , Dy 3 Ag 2.3 Al 8.7 , Dy 3 Cu 2.6 Al 8.4 , Ho 3 Ag 2.1 Al 8.9 , and Ho 3 Cu 2.4 Al 8.6 using single-crystal XRD, and they crystallize in the La 3 Al 11 type, which is a deficient variant of the BaAl 4 structure type. A few other RE 3 T 2 X 9 compounds reported in the La 3 Al 11 type are Ho 3 Cu 2 Al 9 , , Tb 3 Cu 1.2 Al 9.8 , Y 3 Cu 2.5 Al 8.5 , Dy 3 Zn 3.4 Al 7.6 , Er 3 Zn 4 Al 7 , Gd 3 Zn 3.4 Al 7.6 , Ho 3 Zn 4.4 Al 6.6 , La 1.5 Nd 1.5 Al 11 , La 2.28 Y 0.72 Al 11 , Tb 3 Zn 3.6 Al 7.4 , RE 3 Ag x Ga 11– x ( RE = Y and Gd–Yb), Gd 3 Ag 2.8 Ga 8.2 , Lu 3 Pd 1.6 Ga 9.4 , and Tb 3 Ag 2.8 Ga 8.2 …”